A new Google Glass app called Preview streams movie trailers in front of the wearer’s eyes by simply looking at the movie poster or an image of it.

The idea for the app, which was developed by Takahiro Poly Horikawa, is that people can just go to the theaters and use the movie posters to decide which one to watch instead of searching for the movies on their smartphones or tablets.

Glass wearers can activate the app by saying “Ok Glass, preview the movie” and then look at a movie poster. The app will automatically recognize the image and start the movie trailer in seconds. When in “Preview” mode, users can move to another poster and the app will switch trailers automatically.

The database for the trailers can be updated remotely as new movies become available so users won’t have to worry about missing new trailers.